/////////////////////////////////////////////////////////////////////////////
// Original code from libhdfs3. Copyright (c) 2013 - 2014, Pivotal Inc.
// All rights reserved. Author: Zhanwei Wang
/////////////////////////////////////////////////////////////////////////////
//  Modifications by Kumo Inc.
// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//



#ifndef _HDFS_LIBHDFS3_CLIENT_PIPELINEACK_H_
#define _HDFS_LIBHDFS3_CLIENT_PIPELINEACK_H_

#include <kmhdfs/proto/datatransfer.pb.h>

namespace Hdfs {
namespace Internal {

class PipelineAck {
public:
    PipelineAck() :
        invalid(true) {
    }

    PipelineAck(const char * buf, int size) :
        invalid(false) {
        readFrom(buf, size);
    }

    bool isInvalid() {
        return invalid;
    }

    int getNumOfReplies() {
        return proto.status_size();
    }

    int64_t getSeqno() {
        return proto.seqno();
    }

    Status getReply(int i) {
        return proto.status(i);
    }

    bool isSuccess() {
        int size = proto.status_size();

        for (int i = 0; i < size; ++i) {
            if (Status::DT_PROTO_SUCCESS != proto.status(i)) {
                return false;
            }
        }

        return true;
    }

    void readFrom(const char * buf, int size) {
        invalid = !proto.ParseFromArray(buf, size);
    }

    void reset() {
        proto.Clear();
        invalid = true;
    }

private:
    PipelineAckProto proto;
    bool invalid;
};

}
}

#endif /* _HDFS_LIBHDFS3_CLIENT_PIPELINEACK_H_ */
